Not saying it's impossible, but crediting a team's penalty rate to their goalie seems like a stretch.
Just to expand on my previous late night thought, goalie isn't the only factor obviously. If a team had noticeable turnover or drop off for certain players that would/could affect things and also if there was a change in coach/playing style. And obviously a goalie will have less of an impact over offensive/neutral zone penalties.
That 2012 playoff article mentioned Ilya Bryzgalov which jogged my memory about that year's Coyotes. Dave Tippett took over as coach in 2009-10.
2009-10: 317 times shorthanded (18/30) - median (306)
2010-11: 296 times shorthanded (16/30) - median (294)
2011-12: 249 times shorthanded (7/30) - median (270)
2010-11
LW: Whitney-Korpikoski-Wolski*-Pyatt-Boedker-Bissonnette
C: Hanzal-Belanger-Fiddler-Turris-Ebbett
RW: Doan-Vrbata-Stempniak-Upshall
LD: Yandle-Jovanovski-OEL-Schlemko
RD: Aucoin-Morris-(Roszival)
G: Bryzgalov-LaBarbera
2011-12
LW: Whitney-Korpikoski-Pyatt-Torres-Bissonnette
C: Hanzal-Langkow-(Vermette)-Chipchura-Brule-O'Reilly-Turris
RW: Doan-Vrbata-Gordon-Boedkler
LD: Yandle-OEL-Klesla-Schlemko
RD: Aucoin-Morris-Roszival
G: Smith-LaBarbera
Similar looking squads. Main difference would be a good puckhandler in Mike Smith replacing Ilya Brzygalov. A young Oliver Ekman-Larsson absorbed Ed Jovanovski's minutes. And they added Raffi Torres as a pest who led their team in PIMs. Daymond Langkow (in his last NHL season) replaced Eric Belanger.